Casing for pneumatic tubes



March 6, 192s. 1,661,461

A. B. BRQLUSKA lCASING FOR PNEUMATIC TUBES Filed April 6, 1923 3Sheets-Sheet 1 I N V EN TOR. va 9. ffoz ask/1 A TTORNEY.

3 Sheets-Sheet 2 BY'A ATTORNEY.

March 6, 1928;

A. B. BRoLUsKA CASING FOR PNEUMATIC TUBES vFiled April e. 192s March 6,1928, 1,661,461

AjasnoLusKA CASING FOR PNEUMATIG TUBES Filed April 6, 1925 5Sheets-Sheet 3 IN1/EN TOR.

/gr M 6R01. 0.51m.

ATTORNEY Patented Mar. 6; 1928.`

eprice,

AMEL B. BRLUSKA, or' ncRoIT, MICHIGAN. 1

puncture fprepf `and which, the, @me

''d the several novelfetures ef the invent'n 'lre here'infter Yr'iere.fullyV ldescribed and leimed, andthe preferredfqrin ef Ieen-`Sffifliii?) b3' which. theebiets ,are attained s'rsh'vn in the"aldcmpanying drawings in which? Fifi. e i@ @een eine 'en une 2:;2 bf jjjh'njtlternfiti've rrangeinent df the feinfreeinents. Y

Fig. 6 sfa seetion taken 'on line 6446 of Fig# 7.?S ya. 'View lShWg.the.. ilmn'l 'l Whiehxthe e'ords or fabrie` is positiried in the tire.

S is section 'slidwingn 'alternative typejof casing. M

er'rl layers are bniltu'p.v The iiextfportien of the tire 'efjinpriseeit base r2 eiy thef usuel [emettere @inermi rubber. @n

.50,11 Sldf 'fhefeland ill@ plates, 3 .are AiiiQS- tioned et eqiirl'intervals 'alongj the `outer side filled inwiifitli suitableinziterizih preferably indicated 'et plates `5 are poet-ione@ 'on the@me sid@ @if ne'. .2 ,in spce-d relaitin "and vin staggered relitin`With the platee 3, the edges of the plates` B lffl l5 Overlappingflhwn, and, the .Spads bret'wee.nu theD plzfesA` being filled withrubber indiezted t, rlfhe'sewplates 3 ind 5 `es shown .in Fig .1, ewwtiein Cross Sect-M11. and

be Vnede of rubber end s'bests going@ d 70 dingin sired to inrtherstrengthen the plates. `When the rubber and asbestos: composition isused the material is placed in a form in which pressure is applied tothe material and the material with the wires therein is vulcanized untilthe plates become sutiicient'ly hard to resist puncture but are. notallowed tio become sutliciently hard as to lose their {lexibility. Thewires l() reinforce the plates and hold the mass together and at thesamev time tend to hold the plates in a. correct arcuate t'orm. Yt'henthese plates have been positioned in the casing as shown the portion ofthe casing containing the plates is positioned over the portion l ot'the casing and this p0rtion of the casingis covered with alternatelayers T oit strengthening material (which maybe of any well known type)and rubber, and the rubber tread 8 is positioned thereorer containingthe cable bases 9. The entire casing is then vulcanized so that all theparts form an integral portion ot the casing and the plates 3 and .7being formed of a rulcanizable composition become a partot the tire andbeing flexible they cannot break away from the adjacent portions of thecasing and eut the tire which would occur it the plates were made ot anon-rulcanizable material. As shown in Figs. 3. et, 5, and G, the wires10 may be coated with a heat resisting substance indicated by the heavyblack portion around the wires l() so that the wires may be vulcanizedin position in the mass and cannot break loose. With some compositionsadaptable for use as the material for the plates, the wires may becoated with heat resting yulcanizable insulation preferably consistingot asbestos and rubber. The wires are then placed in the composition ofwhich the plates are composed and the composition is put'. under heavypressure, the composition being coated with rubber and being vulcanizedto the desired extent. Both sides ot' the plate are preferably providedwith depreslsions as shown in Figs. 3 and 5 so that in the tinalrulcanizing process, the adjacent surfaces ot the plates and surroundingrubber of the tire carcass will readily vulcanize together. In Figs. 8and t) a more simple construction is shown in which the layers otmaterial 7 are done away with and the plates 3 and 5 are spaced by alayer of rubber l1. doing away with the fabric base Q. While thisconstruction does not produce quite as strong a casing it will be foundvery satisfactory for all normal uses.

The structure of a tire disclosed in this application differs -from thatdisclosed in my U. S. Patent 1,482,217 issued January :'29, 1924,particularly in the, manner in Which the puncture resisting elements arearranged relative to the strengthening material.

From the foregoing description it becomes evident that the device isvery simple and efficient in operation, is practically puncture proofdue to the overlapping of the plates and the staggered arrangement otthe wires l0 therein and has all ot the resiliency and tlexibility olthe normal casing duc to the breaking ot the joints between the platesin alternate relation and due to the flexible resilient material betweenthe plates and provides a device which accomplishes the objectsdescribed.

Haring thus fully described my invention, its utility and mode ofoperation7 what ll claim and desire to secure by Letters Patent. ot theUnited States is-- l. A casing tor pneumatic tubes comprising a seriesot puncture resisting plates 0l rulcanizable material embedded in thecasing, a series of reinforcing wires coated with a heat resistingsubstance and extending through the said plates, the wires beingarranged in the plates in crossed layers at an angle to the center planeof the casing and in .staggered relation to prevent the possibility otpuncture, the casing being vulcanized to secure the plates in position.

A casing for pneumatic tubes comprising a series ot' puncture resistingplates of rulcanizable material embedded in the casing, a series otreinforcing wires extending through the plates at an angle to the centerplane of the. easing, the wires being arranged in the plates in layersin angular relation one to the other and in staggered relation, a seriesof alternate layers of rubber and fabric on opposite sides of theplates. a tread ou the exterior of the casing thus formed, the entirecasing and tread beingT vulcanized to secure the parts together.

fl. A casing tor pneumatic tubes comprising a. series of punctureresisting plates of a rnlcanizable material with which asbestos isassociated. the said plates lying in two series' in overlappingrelation. the spaces between the plates being filled with vulcanizablematerial and a strengthening material, reinforcing members embedded insaid plates at an angle to the center plane of the casing, a series 0ilayers of strengthening material and rubber supporting the plates, and arubber tread covering the casing thus formed, the said casing beingvulcanized to secure the plates in position as an integral portion olthe casing.

1. A casina for pneumatic tubes Comprising a .series ot alternate layersof rubber and strengthening material, a series of puncture resistingplates ot vulcanizable material spaced equidistantly about the peripheryof the casing, a series of reinforcing wires embedded in the platesextending at an angle to the center plane of the casing, a vulcanizablefilling between the plates, a layer of rubber positioned over theplates, a layer of strengthening material enclosingthe rubber, a. secondlayer 6i rubber enclosing the strengthening material, a second series ofllt) puncture resisting plates of vulcanizable mamaterial covering thetwo seresof plates,` f

terial spaced equidstantly about the peand a rubber tread forming acover for the 10 riphery of the Second layer 0f rubber, recasing, theentire casing When assembled nforcng Wires embedded in the said secondbeing vulcanized to secure the several parts series of plates extendingat an angle t0 the together as a unit. center plane ofthe casing, avulcanizable In testn'lonywhereof, I sign this specificomposIton betweenthe plates, a series of cation.

alternate layers of rubber and strengthening AMEL B. BROLUSKA.

